EP0551238A1 - Device for stopping the drum - Google Patents

Device for stopping the drum Download PDF

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Publication number
EP0551238A1
EP0551238A1 EP93420003A EP93420003A EP0551238A1 EP 0551238 A1 EP0551238 A1 EP 0551238A1 EP 93420003 A EP93420003 A EP 93420003A EP 93420003 A EP93420003 A EP 93420003A EP 0551238 A1 EP0551238 A1 EP 0551238A1
Authority
EP
European Patent Office
Prior art keywords
lever
drum
cam
finger
shoe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93420003A
Other languages
German (de)
French (fr)
Other versions
EP0551238B1 (en
Inventor
Georges Astic
Denis Girardin
Jean Vollot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noalia Solutions SA
Original Assignee
Thales Avionics SAS
Crouzet Appliance Controls SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thales Avionics SAS, Crouzet Appliance Controls SA filed Critical Thales Avionics SAS
Publication of EP0551238A1 publication Critical patent/EP0551238A1/en
Application granted granted Critical
Publication of EP0551238B1 publication Critical patent/EP0551238B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/302—Automatic drum positioning

Definitions

  • the present invention relates to washing machines and in particular those with top loading.
  • An object of the present invention is to provide a device for stopping a washing machine drum in the hatch position at the top at the end or during an interruption of a washing cycle.
  • Another object of the present invention is to provide such a device making it possible to maintain the drum in the hatch-up position during its unloading.
  • a stop device comprising a shoe which is normally in a high rest position allowing a washing machine drum to freely rotate. At the end of a rotation cycle, the shoe is lowered and pressed against the drum to rub against it at the same time as the drum drive motor is restarted.
  • the drive motor is powerful enough to rotate the drum despite the braking forces of the shoe.
  • a finger secured to the drum activates a mechanism which stops the motor. Then, the drum finds itself blocked by the shoe in the trap door position at the top.
  • the present invention relates more particularly to a stop device in a predetermined position of a drum driven by a motor to perform cycles of rotation about an axis secured to a frame.
  • This device comprises: a brake movable relative to the frame; a detector lever articulated on the frame; means capable of bringing the brake and the sensor lever to a rest position or to an active position where the brake acts on the drum or on a part secured to the drum; a finger secured to the drum capable of actuating the detector lever in the active position; and means cooperating with the sensor lever to start the engine in the active position and stop it when said lever is actuated by said finger.
  • the brake is a shoe brake mounted on a lever articulated at one end on the frame and the free end of which is actuated by a rod and crank system.
  • said crank comprises a cam against which is pressed an arm of the detector lever, the cam being such that, in the rest position, one arm of the lever is outside the path of said finger , and that, in the active position, the arm is in the path of the finger.
  • the detector lever cooperates with a switch for starting said motor, the detector lever actuating the switch in said active position.
  • the cam comprises an indentation in which a heel of the detector lever enters the active position.
  • the cam comprises a notch cooperating with a second switch for detecting the position of the cam.
  • the shoe is articulated on the lever eccentrically and a spring is disposed between the lever and the shoe.
  • the left end of the lever 3 is articulated relative to the frame 5 of the washing machine.
  • a system of rod 7 and crank 8 acts on the right end of the lever 3 to press or not the shoe 1 on a drum 10 of washing machine.
  • the crank 8 is in fact a circular cam pressing on one, 12-1, of the arms of a lever 12 articulated on the frame near the lower part of the cam 8.
  • the arm 12-1 extends towards the top and the left and the lever 12 comprises another arm 12-2 extending downward and the right to the vicinity of the drum 10.
  • the arm 12-1 is biased clockwise towards the cam 8 by a spring 14 disposed between the free end of the arm 12-1 and the frame.
  • FIG. 1A corresponds to the rest position of the stop device according to the invention.
  • the lever 3 is in a high position and the shoe 1 does not press on the drum 10.
  • the arm 12-1 presses on a circular part of the cam 8 and the arm 12-2 is in a raised position where its free end is outside the path of a finger 16 secured to the drum 10. In this position, the drum 10 freely rotates.
  • FIG. 1B corresponds to an active position of the stop device.
  • the cam 8 has rotated 180 ° relative to the position of FIG. 1A and has caused the drum 10 to be blocked by the shoe 1.
  • the arm 12-1 is in abutment against a flat 8-1 of the cam 8, which caused a clockwise rotation of the lever 12 relative to the position of Figure 1A.
  • the arm 12-1 activates a switch 18 and the free end of the arm 12-2 is in the path of the finger 16.
  • the profile of the free end of the arm 12-2 is such, as is shown in the figures, that the finger 16 can lift this end regardless of the direction of rotation of the drum.
  • Switch 18 causes the rotation of the cam 8 and starts the drum drive motor 10 clockwise or counterclockwise.
  • the drum 10 is braked by the shoe 1 but the coefficient of friction of this shoe is chosen so that the motor can overcome the friction forces.
  • the drum 10 starts to rotate slowly and at a given instant the finger 16 meets the free end of the arm 12-2. Then, the lever 12 is driven by the finger in an anticlockwise direction.
  • the speed of rotation of the drum is chosen slow so that the kinetic energy of the drum is low enough so that, after deactivation of the switch 18, the drum stops at an angle such that the finger 16 always keeps the arm 12 raised. -2.
  • FIG. 1C shows the stop device at an instant after the finger 16 meets the free end of the arm 12-2.
  • the arm 12-1 of the lever 12 moved away from the switch 18 and deactivated the latter.
  • the drum drive motor 10 stops and the drum remains blocked by the shoe 1 in this position.
  • the hatch position at the top of the drum 10 is made to correspond to this position.
  • FIGS. 2A to 2C represent an embodiment of a stop device according to the present invention in the respective positions corresponding to FIGS. 1A to 1C.
  • FIGS. 2A to 2C there are the same elements as in FIGS. 1A to 1C, or elements having identical functions, designated by the same references.
  • This device operates as has been described in relation to the previous figures. In the following description, we will not be interested only to details of the shape of the parts, not appearing in FIGS. 1A to 1C.
  • the lever 3 is of inverted U section in the representation of FIGS. 2A to 2C and it is articulated on a plate 5 secured to the frame of the washing machine.
  • the shoe 1 is articulated on the side walls of the lever 3 offset to the left relative to the center of the shoe which corresponds substantially to the center of the lever 3.
  • a spring 20 disposed between the bottom of the lever 3 and the upper face of the shoe 1 to the level of the central part of the hoof, urges this hoof clockwise.
  • the upper arm 12-1 of the lever 12 comprises at its free end, as shown, a heel 12-3 extending to the right and pressing on the cam 8. This arm 12-1 also includes an extension 12-4 to the left which is intended to actuate the switch 18 located above.
  • the lower arm 12-2 of the lever 12 comprises, at its free end, a downward protuberance serving as a support zone for the finger 16 secured to the drum 10.
  • the cam 8, which actuates the lever 3 via the connecting rod 7, is of cylindrical shape.
  • An indentation located at the rear of the cam 8 cooperates with the heel 12-3 of the lever 12 and plays the role of the flat 8-1 of the preceding figures.
  • a notch 8-2 located at the front of the cam 8 cooperates with a switch 22 to detect the position of this cam.
  • Figure 2A corresponds to the rest position of Figure 1A.
  • the lever 3 is in the high position and the shoe 1 is not in contact with the drum 10.
  • the cam 8 is in a position such that the heel 12-3 presses on a circular part of the cam and the notch 8 -2 deactivates the switch 22.
  • the notch 8-2 cooperates with the switch 22 to detect this rest position in order to stop a motor, not shown, for driving the cam 8.
  • Figure 2B corresponds to the active position of Figure 1B.
  • the cam 8 has rotated 180 ° and the indentation 8-1 is located opposite the heel 12-3 of the lever 12.
  • the lever 12 being biased clockwise by a spring not shown (such as '' a spiral spring arranged around the axis of articulation of the lever 12), the heel 12-3 enters the indentation 8-1 and the end 12-2 of the lever lowers towards a position where it is susceptible to intercept finger 16.
  • the extension 12-4 of the lever 12 actuates the switch 18 which stops the motor of the cam 8 and starts the motor of the drum 10.
  • the pressing force of the shoe 1 on the drum 10 is obtained by the spring 20 which is compressed by the lever 3.
  • the braking force caused by the shoe 1 is chosen to be able to be overcome by the torque of the drum motor 10. The drum 10 therefore starts to rotate slowly.
  • Figure 2C corresponds to the position of Figure 1C where the finger 16 meets the free end of the arm 12-2. In this position, the lever 12 has turned anti-clockwise and its extension 12-4 has deactivated the switch 18. The drum motor 10 is stopped and the drum remains blocked in this position by the shoe 1.
  • this shoe rests on the drum of the washing machine.
  • this shoe is preferably designed to press on an integral part of the drum located outside the tank in which the drum is generally disposed, such as the pulley or the drive belt of the drum.
  • the finger 16 is then secured to the pulley.
  • the information of the switches 18 and 22 can be used to control the drive motors of the drum and of the cam 8 by an adequate programmer achievable by a person skilled in the art.
  • shoe presses on the aforementioned belt it may be metallic. If it presses on a metal part, its friction surface may be coated with a material commonly used in brakes, such as ferodo.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The present invention relates to a device for stopping in a predetermined position a drum (10) driven by a motor in order to execute cycles of rotation about a shaft fixed to a frame (5). This device comprises: a brake (1, 3) movable relative to the frame; a detector lever (12) articulated on the frame; means (7, 8, 8-1) capable of bringing the brake and the detector lever into a position of rest or into an active position, in which the brake acts on the drum or a piece fixed to the drum; a finger (16) fixed to the drum and capable of actuating the detector lever into the active position; and means (18) cooperating with the detector lever in order to start the motor in the active position and stop it when the said lever is actuated by the said finger. <IMAGE>

Description

La présente invention concerne les machines à laver et en particulier celles à chargement par le haut.The present invention relates to washing machines and in particular those with top loading.

Pour charger ou décharger le tambour d'une machine à laver à chargement par le haut, il faut généralement faire tourner le tambour d'une position initiale vers une position où l'on peut accéder à une trappe du tambour. Cette opération de rotation du tambour nécessite un certain effort pour vaincre le balourd du tambour qui est particulièrement important si du linge contenu dans le tambour n'est pas essoré. Pendant le déchargement du tambour, celui-ci tend à retrouver sa position initiale et il faut donc le tenir en même temps qu'on le décharge. Si on le lâche malencontreusement pendant ces opérations, le tambour pourrait tourner avec sa trappe ouverte et du linge tomber au fond de la cuve.To load or unload the drum of a top-loading washing machine, you usually have to rotate the drum from an initial position to a position where you can access a drum door. This drum rotation operation requires a certain effort to overcome the imbalance of the drum which is particularly important if the linen contained in the drum is not spun. During the unloading of the drum, it tends to return to its initial position and must therefore be held at the same time as it is unloaded. If you accidentally let go of it during these operations, the drum could turn with its hatch open and laundry will fall to the bottom of the tank.

Un objet de la présente invention est de prévoir un dispositif permettant d'arrêter un tambour de machine à laver en position trappe en haut à la fin ou lors d'une interruption d'un cycle de lavage.An object of the present invention is to provide a device for stopping a washing machine drum in the hatch position at the top at the end or during an interruption of a washing cycle.

Un autre objet de la présente invention est de prévoir un tel dispositif permettant de maintenir le tambour en position trappe en haut pendant son déchargement.Another object of the present invention is to provide such a device making it possible to maintain the drum in the hatch-up position during its unloading.

Ces objets sont atteints grâce à un dispositif d'arrêt comprenant un sabot qui est normalement à une position de repos haute permettant à un tambour de machine à laver d'effectuer librement des rotations. A la fin d'un cycle de rotations, le sabot est abaissé et plaqué contre le tambour pour frotter contre celui-ci en même temps que le moteur d'entraînement du tambour est remis en marche. Le moteur d'entraînement est suffisamment puissant pour entraîner en rotation le tambour malgré les forces de freinage du sabot. Lorsque le tambour arrive en position trappe en haut, un doigt solidaire du tambour actionne un mécanisme qui arrête le moteur. Alors, le tambour se retrouve bloqué par le sabot en position trappe en haut.These objects are achieved by a stop device comprising a shoe which is normally in a high rest position allowing a washing machine drum to freely rotate. At the end of a rotation cycle, the shoe is lowered and pressed against the drum to rub against it at the same time as the drum drive motor is restarted. The drive motor is powerful enough to rotate the drum despite the braking forces of the shoe. When the drum reaches the top hatch position, a finger secured to the drum activates a mechanism which stops the motor. Then, the drum finds itself blocked by the shoe in the trap door position at the top.

La présente invention vise plus particulièrement un dispositif d'arrêt dans une position prédéterminée d'un tambour entraîné par un moteur pour effectuer des cycles de rotation autour d'un axe solidaire d'un bâti. Ce dispositif comprend : un frein mobile par rapport au bâti ; un levier détecteur articulé sur le bâti ; des moyens susceptibles d'amener le frein et le levier détecteur dans une position de repos ou dans une position active où le frein agit sur le tambour ou une pièce solidaire du tambour ; un doigt solidaire du tambour susceptible d'actionner le levier détecteur à la position active ; et des moyens coopérant avec le levier détecteur pour mettre en marche le moteur dans la position active et l'arrêter lorsque ledit levier est actionné par ledit doigt.The present invention relates more particularly to a stop device in a predetermined position of a drum driven by a motor to perform cycles of rotation about an axis secured to a frame. This device comprises: a brake movable relative to the frame; a detector lever articulated on the frame; means capable of bringing the brake and the sensor lever to a rest position or to an active position where the brake acts on the drum or on a part secured to the drum; a finger secured to the drum capable of actuating the detector lever in the active position; and means cooperating with the sensor lever to start the engine in the active position and stop it when said lever is actuated by said finger.

Selon un mode de réalisation de la présente invention, le frein est un frein à sabot monté sur un levier articulé à une extrémité sur le bâti et dont l'extrémité libre est actionnée par un système à bielle et manivelle.According to one embodiment of the present invention, the brake is a shoe brake mounted on a lever articulated at one end on the frame and the free end of which is actuated by a rod and crank system.

Selon un mode de réalisation de la présente invention, ladite manivelle comprend une came contre laquelle est sollicité un bras du levier détecteur, la came étant telle que, à la position de repos, un bras du levier se trouve en dehors de la trajectoire dudit doigt, et que, à la position active, le bras se trouve dans la trajectoire du doigt.According to one embodiment of the present invention, said crank comprises a cam against which is pressed an arm of the detector lever, the cam being such that, in the rest position, one arm of the lever is outside the path of said finger , and that, in the active position, the arm is in the path of the finger.

Selon un mode de réalisation de la présente invention, le levier détecteur coopère avec un interrupteur de mise en marche dudit moteur, le levier détecteur actionnant l'interrupteur dans ladite position active.According to an embodiment of the present invention, the detector lever cooperates with a switch for starting said motor, the detector lever actuating the switch in said active position.

Selon un mode de réalisation de la présente invention, la came comprend une indentation dans laquelle rentre un talon du levier détecteur dans la position active.According to an embodiment of the present invention, the cam comprises an indentation in which a heel of the detector lever enters the active position.

Selon un mode de réalisation de la présente invention, la came comprend une encoche coopérant avec un deuxième interrupteur de détection de la position de la came.According to an embodiment of the present invention, the cam comprises a notch cooperating with a second switch for detecting the position of the cam.

Selon un mode de réalisation de la présente invention, le sabot est articulé sur le levier de façon excentrée et un ressort est disposé entre le levier et le sabot.According to an embodiment of the present invention, the shoe is articulated on the lever eccentrically and a spring is disposed between the lever and the shoe.

Ces objets, caractéristiques et avantages ainsi que d'autres de la présente invention seront exposés en détail dans la description suivante de modes de réalisation particuliers faite en relation avec les figures jointes parmi lesquelles :

  • les figures 1A à 1C représentent sous forme de schéma de principe trois positions d'un dispositif d'arrêt de tambour selon la présente invention ; et
  • les figures 2A à 2C représentent un mode de réalisation de dispositif d'arrêt selon la présente invention dans les positions respectives correspondant aux figures 1A à 1C.
These objects, characteristics and advantages as well as others of the present invention will be explained in detail in the following description of particular embodiments made in relation to the attached figures, among which:
  • Figures 1A to 1C show in block diagram three positions of a drum stop device according to the present invention; and
  • FIGS. 2A to 2C represent an embodiment of a stop device according to the present invention in the respective positions corresponding to FIGS. 1A to 1C.

Des termes tels que "supérieur", "inférieur", "gauche", "droite",... sont utilisés par souci de clarté par rapport aux figures et ne doivent pas être considérés comme limitatifs, le dispositif selon l'invention pouvant être disposé selon toute autre orientation jugée convenable par l'homme du métier.Terms such as "upper", "lower", "left", "right", ... are used for clarity with respect to the figures and should not be considered as limiting, the device according to the invention can be arranged according to any other orientation deemed suitable by a person skilled in the art.

Un dispositif d'arrêt selon la présente invention représenté très schématiquement aux figures 1A à 1C comprend un frein constitué d'un sabot 1 solidaire d'un levier 3 sensiblement horizontal. L'extrémité gauche du levier 3 est articulé par rapport au bâti 5 de la machine à laver. Un système à bielle 7 et manivelle 8 agit sur l'extrémité droite du levier 3 pour plaquer ou non le sabot 1 sur un tambour 10 de machine à laver.A stop device according to the present invention shown very schematically in Figures 1A to 1C comprises a brake consisting of a shoe 1 secured to a substantially horizontal lever 3. The left end of the lever 3 is articulated relative to the frame 5 of the washing machine. A system of rod 7 and crank 8 acts on the right end of the lever 3 to press or not the shoe 1 on a drum 10 of washing machine.

La manivelle 8 est en fait une came circulaire appuyant sur l'un, 12-1, des bras d'un levier 12 articulé sur le bâti à proximité de la partie inférieure de la came 8. Le bras 12-1 s'étend vers le haut et la gauche et le levier 12 comprend un autre bras 12-2 s'étendant vers le bas et la droite jusqu'au voisinage du tambour 10. Le bras 12-1 est sollicité dans le sens des aiguilles d'une montre vers la came 8 par un ressort 14 disposé entre l'extrémité libre du bras 12-1 et le bâti.The crank 8 is in fact a circular cam pressing on one, 12-1, of the arms of a lever 12 articulated on the frame near the lower part of the cam 8. The arm 12-1 extends towards the top and the left and the lever 12 comprises another arm 12-2 extending downward and the right to the vicinity of the drum 10. The arm 12-1 is biased clockwise towards the cam 8 by a spring 14 disposed between the free end of the arm 12-1 and the frame.

La position de la figure 1A correspond à la position de repos du dispositif d'arrêt selon l'invention. Le levier 3 est dans une position haute et le sabot 1 n'appuie pas sur le tambour 10. Le bras 12-1 appuie sur une partie circulaire de la came 8 et le bras 12-2 est dans une position levée où son extrémité libre est en dehors de la trajectoire d'un doigt 16 solidaire du tambour 10. Dans cette position, le tambour 10 effectue librement des rotations.The position of FIG. 1A corresponds to the rest position of the stop device according to the invention. The lever 3 is in a high position and the shoe 1 does not press on the drum 10. The arm 12-1 presses on a circular part of the cam 8 and the arm 12-2 is in a raised position where its free end is outside the path of a finger 16 secured to the drum 10. In this position, the drum 10 freely rotates.

Lors de l'arrêt d'un cycle de rotations, que ce soit à la fin d'un cycle ou lors d'une interruption volontaire, la came 8 est mise en rotation dans le sens des aiguilles d'une montre. En tournant, cette came 8 abaisse le levier 3 et plaque le sabot 1 contre le tambour 10.When a rotation cycle stops, either at the end of a cycle or during a voluntary interruption, the cam 8 is rotated in the clockwise direction. By turning, this cam 8 lowers the lever 3 and presses the shoe 1 against the drum 10.

La figure 1B correspond à une position active du dispositif d'arrêt. La came 8 a tourné de 180° par rapport à la position de la figure 1A et a entraîné le blocage du tambour 10 par le sabot 1. Le bras 12-1 se trouve en appui contre un méplat 8-1 de la came 8, ce qui a provoqué une rotation dans le sens des aiguilles d'une montre du levier 12 par rapport à la position de la figure 1A.FIG. 1B corresponds to an active position of the stop device. The cam 8 has rotated 180 ° relative to the position of FIG. 1A and has caused the drum 10 to be blocked by the shoe 1. The arm 12-1 is in abutment against a flat 8-1 of the cam 8, which caused a clockwise rotation of the lever 12 relative to the position of Figure 1A.

Dans cette position, le bras 12-1 active un interrupteur 18 et l'extrémité libre du bras 12-2 se trouve dans la trajectoire du doigt 16. Le profil de l'extrémité libre du bras 12-2 est tel, comme cela est représenté dans les figures, que le doigt 16 puisse lever cette extrémité quel que soit le sens de rotation du tambour. L'interrupteur 18 provoque l'arrêt de la rotation de la came 8 et met en marche le moteur d'entraînement du tambour 10 dans le sens des aiguilles d'une montre ou en sens inverse. Le tambour 10 est freiné par le sabot 1 mais le coefficient de frottement de ce sabot est choisi de sorte que le moteur puisse vaincre les forces de frottement.In this position, the arm 12-1 activates a switch 18 and the free end of the arm 12-2 is in the path of the finger 16. The profile of the free end of the arm 12-2 is such, as is shown in the figures, that the finger 16 can lift this end regardless of the direction of rotation of the drum. Switch 18 causes the rotation of the cam 8 and starts the drum drive motor 10 clockwise or counterclockwise. The drum 10 is braked by the shoe 1 but the coefficient of friction of this shoe is chosen so that the motor can overcome the friction forces.

Ainsi, le tambour 10 se met à tourner lentement et à un instant donné le doigt 16 rencontre l'extrémité libre du bras 12-2. Alors, le levier 12 est entraîné par le doigt dans le sens contraire des aiguilles d'une montre. La vitesse de rotation du tambour est choisie lente afin que l'énergie cinétique du tambour soit suffisamment faible pour que, après désactivation de l'interrupteur 18, le tambour s'arrête dans un angle tel que le doigt 16 maintienne toujours levé le bras 12-2.Thus, the drum 10 starts to rotate slowly and at a given instant the finger 16 meets the free end of the arm 12-2. Then, the lever 12 is driven by the finger in an anticlockwise direction. The speed of rotation of the drum is chosen slow so that the kinetic energy of the drum is low enough so that, after deactivation of the switch 18, the drum stops at an angle such that the finger 16 always keeps the arm 12 raised. -2.

La figure 1C représente le dispositif d'arrêt à un instant postérieur à la rencontre du doigt 16 avec l'extrémité libre du bras 12-2. En tournant, le bras 12-1 du levier 12 s'est éloigné de l'interrupteur 18 et a désactivé celui-ci. Ainsi, le moteur d'entraînement du tambour 10 s'arrête et le tambour reste bloqué par le sabot 1 dans cette position. Bien entendu, on fait correspondre à cette position la position trappe en haut du tambour 10.FIG. 1C shows the stop device at an instant after the finger 16 meets the free end of the arm 12-2. By turning, the arm 12-1 of the lever 12 moved away from the switch 18 and deactivated the latter. Thus, the drum drive motor 10 stops and the drum remains blocked by the shoe 1 in this position. Of course, the hatch position at the top of the drum 10 is made to correspond to this position.

Lorsqu'on commence un nouveau cycle de rotations, la came 8 est remise en rotation dans le sens des aiguilles d'une montre afin qu'elle rejoigne sa position initiale de la figure 1A où le tambour 10 est débloqué et le bras 12-2 est écarté de sa position d'interception du doigt 16.When a new cycle of rotations is started, the cam 8 is rotated clockwise so that it returns to its initial position in FIG. 1A where the drum 10 is released and the arm 12-2 is removed from its intercept position of finger 16.

Les figures 2A à 2C représentent un mode de réalisation de dispositif d'arrêt selon la présente invention dans les positions respectives correspondant aux figures 1A à 1C. Dans les figures 2A à 2C, on retrouve des mêmes éléments qu'aux figures 1A à 1C, ou des éléments ayant des fonctions identiques, désignés par des mêmes références. Ce dispositif fonctionne comme cela a été décrit en relation avec les figures précédentes. Dans la suite de la description, on ne s'intéressera qu'à des détails de forme des pièces, n'apparaissant pas dans les figures 1A à 1C.FIGS. 2A to 2C represent an embodiment of a stop device according to the present invention in the respective positions corresponding to FIGS. 1A to 1C. In FIGS. 2A to 2C, there are the same elements as in FIGS. 1A to 1C, or elements having identical functions, designated by the same references. This device operates as has been described in relation to the previous figures. In the following description, we will not be interested only to details of the shape of the parts, not appearing in FIGS. 1A to 1C.

Le levier 3 est à section en U renversé dans la représentation des figures 2A à 2C et il est articulé sur une plaque 5 solidaire du bâti de la machine à laver. Le sabot 1 est articulé sur les parois latérales du levier 3 en déport vers la gauche par rapport au centre du sabot qui correspond sensiblement au centre du levier 3. Un ressort 20 disposé entre le fond du levier 3 et la face supérieure du sabot 1 au niveau de la partie centrale du sabot, sollicite ce sabot dans le sens des aiguilles d'une montre.The lever 3 is of inverted U section in the representation of FIGS. 2A to 2C and it is articulated on a plate 5 secured to the frame of the washing machine. The shoe 1 is articulated on the side walls of the lever 3 offset to the left relative to the center of the shoe which corresponds substantially to the center of the lever 3. A spring 20 disposed between the bottom of the lever 3 and the upper face of the shoe 1 to the level of the central part of the hoof, urges this hoof clockwise.

Le bras supérieur 12-1 du levier 12 comprend à son extrémité libre, comme cela est représenté, un talon 12-3 s'étendant vers la droite et appuyant sur la came 8. Ce bras 12-1 comprend également une extension 12-4 vers la gauche qui est destinée à actionner l'interrupteur 18 se trouvant au-dessus. Le bras inférieur 12-2 du levier 12 comprend, au niveau de son extrémité libre, une protubérance vers le bas servant de zone d'appui pour le doigt 16 solidaire du tambour 10.The upper arm 12-1 of the lever 12 comprises at its free end, as shown, a heel 12-3 extending to the right and pressing on the cam 8. This arm 12-1 also includes an extension 12-4 to the left which is intended to actuate the switch 18 located above. The lower arm 12-2 of the lever 12 comprises, at its free end, a downward protuberance serving as a support zone for the finger 16 secured to the drum 10.

La came 8, qui actionne le levier 3 par l'intermédiaire de la bielle 7, est de forme cylindrique. Une indentation située à l'arrière de la came 8 coopère avec le talon 12-3 du levier 12 et joue le rôle du méplat 8-1 des figures précédentes. Une encoche 8-2 située à l'avant de la came 8 coopère avec un interrupteur 22 pour détecter la position de cette came.The cam 8, which actuates the lever 3 via the connecting rod 7, is of cylindrical shape. An indentation located at the rear of the cam 8 cooperates with the heel 12-3 of the lever 12 and plays the role of the flat 8-1 of the preceding figures. A notch 8-2 located at the front of the cam 8 cooperates with a switch 22 to detect the position of this cam.

La figure 2A correspond à la position de repos de la figure 1A. Le levier 3 est en position haute et le sabot 1 n'est pas en appui sur le tambour 10. La came 8 est à une position telle que le talon 12-3 appuie sur une partie circulaire de la came et que l'encoche 8-2 désactive l'interrupteur 22. L'encoche 8-2 coopère avec l'interrupteur 22 pour détecter cette position de repos afin d'arrêter un moteur, non représenté, d'entraînement de la came 8.Figure 2A corresponds to the rest position of Figure 1A. The lever 3 is in the high position and the shoe 1 is not in contact with the drum 10. The cam 8 is in a position such that the heel 12-3 presses on a circular part of the cam and the notch 8 -2 deactivates the switch 22. The notch 8-2 cooperates with the switch 22 to detect this rest position in order to stop a motor, not shown, for driving the cam 8.

La figure 2B correspond à la position active de la figure 1B. La came 8 a tourné de 180° et l'indentation 8-1 se trouve en face du talon 12-3 du levier 12. Le levier 12 étant sollicité dans le sens des aiguilles d'une montre par un ressort non représenté (tel qu'un ressort spiral disposé autour de l'axe d'articulation du levier 12 ), le talon 12-3 pénètre dans l'indentation 8-1 et l'extrémité 12-2 du levier s'abaisse vers une position où elle est susceptible d'intercepter le doigt 16.Figure 2B corresponds to the active position of Figure 1B. The cam 8 has rotated 180 ° and the indentation 8-1 is located opposite the heel 12-3 of the lever 12. The lever 12 being biased clockwise by a spring not shown (such as '' a spiral spring arranged around the axis of articulation of the lever 12), the heel 12-3 enters the indentation 8-1 and the end 12-2 of the lever lowers towards a position where it is susceptible to intercept finger 16.

L'extension 12-4 du levier 12 actionne l'interrupteur 18 qui arrête le moteur de la came 8 et met en marche le moteur du tambour 10.The extension 12-4 of the lever 12 actuates the switch 18 which stops the motor of the cam 8 and starts the motor of the drum 10.

L'effort de plaquage du sabot 1 sur le tambour 10 est obtenu par le ressort 20 qui est comprimé par le levier 3. Comme on l'a précédemment mentionné, l'effort de freinage provoqué par le sabot 1 est choisi pour pouvoir être vaincu par le couple du moteur du tambour 10. Le tambour 10 se met donc à tourner lentement.The pressing force of the shoe 1 on the drum 10 is obtained by the spring 20 which is compressed by the lever 3. As previously mentioned, the braking force caused by the shoe 1 is chosen to be able to be overcome by the torque of the drum motor 10. The drum 10 therefore starts to rotate slowly.

La figure 2C correspond à la position de la figure 1C où le doigt 16 rencontre l'extrémité libre du bras 12-2. Dans cette position, le levier 12 a tourné dans le sens contraire des aiguilles d'une montre et son extension 12-4 a désactivé l'interrupteur 18. Le moteur du tambour 10 est arrêté et le tambour reste bloqué dans cette position par le sabot 1.Figure 2C corresponds to the position of Figure 1C where the finger 16 meets the free end of the arm 12-2. In this position, the lever 12 has turned anti-clockwise and its extension 12-4 has deactivated the switch 18. The drum motor 10 is stopped and the drum remains blocked in this position by the shoe 1.

Lorsque le dispositif d'arrêt reprend sa position de repos, la came 8 est mise en rotation jusqu'à ce que l'encoche 8-2 de la came 8 désactive l'interrupteur 22.When the stop device returns to its rest position, the cam 8 is rotated until the notch 8-2 of the cam 8 deactivates the switch 22.

On a supposé pour simplifier dans ce qui précède que le sabot appuyait sur le tambour de la machine à laver. Bien entendu, ce sabot est de préférence prévu pour appuyer sur une partie solidaire du tambour se trouvant hors de la cuve dans laquelle est généralement disposé le tambour, telle que la poulie ou la courroie d'entraînement du tambour. Le doigt 16 est alors solidaire de la poulie.It has been assumed for the sake of simplicity in the foregoing that the shoe rests on the drum of the washing machine. Of course, this shoe is preferably designed to press on an integral part of the drum located outside the tank in which the drum is generally disposed, such as the pulley or the drive belt of the drum. The finger 16 is then secured to the pulley.

Les informations des interrupteurs 18 et 22 peuvent être exploitées pour commander les moteurs d'entraînement du tambour et de la came 8 par un programmateur adéquat réalisable par l'homme du métier.The information of the switches 18 and 22 can be used to control the drive motors of the drum and of the cam 8 by an adequate programmer achievable by a person skilled in the art.

L'homme du métier pourra choisir convenablement le matériau du sabot 1. Si le sabot appuie sur la courroie susmentionnée, il pourra être métallique. S'il appuie sur une partie métallique, sa surface en frottement pourra être revêtue d'un matériau couramment utilisé dans les freins, tel que du ferodo.A person skilled in the art will be able to choose the material of shoe 1 properly. If the shoe presses on the aforementioned belt, it may be metallic. If it presses on a metal part, its friction surface may be coated with a material commonly used in brakes, such as ferodo.

De nombreuses solutions techniques différentes apparaîtront à l'homme du métier pour réaliser les fonctions décrites.Numerous different technical solutions will appear to those skilled in the art to perform the functions described.

Claims (7)

Dispositif d'arrêt dans une position prédéterminée d'un tambour (10) entraîné par un moteur pour effectuer des cycles de rotation autour d'un axe solidaire d'un bâti (5), comprenant : - un frein mobile (1, 3) par rapport au bâti ; - un levier détecteur (12) articulé sur le bâti ; et - un doigt (16) solidaire du tambour susceptible d'actionner le levier détecteur à la position active ;
caractérisé en ce qu'il comprend : - des moyens indépendants du levier détecteur (7,8,8-1) susceptibles d'amener le frein et le levier détecteur dans une position de repos ou dans une position active où le frein agit sur le tambour ou une pièce solidaire du tambour ; et - des moyens ( 18 ) coopérant avec le levier détecteur pour mettre en marche le moteur dans la position active et l'arrêter lorsque le levier est actionné par ledit doigt. Device for stopping in a predetermined position a drum (10) driven by a motor to perform cycles of rotation around an axis integral with a frame (5), comprising: - a movable brake (1, 3) relative to the frame; - a detector lever (12) articulated on the frame; and - A finger (16) secured to the drum capable of actuating the detector lever in the active position;
characterized in that it comprises: - means independent of the detector lever (7,8,8-1) capable of bringing the brake and the detector lever into a rest position or into an active position where the brake acts on the drum or on a part secured to the drum; and - Means (18) cooperating with the detector lever to start the engine in the active position and stop it when the lever is actuated by said finger. Dispositif d'arrêt selon la revendication 1, caractérisé en ce que le frein (1, 3) est un frein à sabot (1) monté sur un levier (3) articulé à une extrémité sur le bâti et dont l'extrémité libre est actionnée par un système à bielle (7) et manivelle (8).Stop device according to claim 1, characterized in that the brake (1, 3) is a shoe brake (1) mounted on a lever (3) articulated at one end on the frame and whose free end is actuated by a connecting rod (7) and crank (8) system. Dispositif d'arrêt selon la revendication 2, caractérisé en ce que ladite manivelle (8) comprend une came contre laquelle est sollicité un bras (12-1) du levier détecteur (12), la came étant telle que, à la position de repos, un bras (12-2) du levier se trouve en dehors de la trajectoire dudit doigt (16), et que, à la position active, le bras se trouve dans la trajectoire du doigt.Stop device according to claim 2, characterized in that said crank (8) comprises a cam against which is pressed an arm (12-1) of the sensor lever (12), the cam being such that, in the rest position , an arm (12-2) of the lever is outside the path of said finger (16), and that, in the active position, the arm is in the path of the finger. Dispositif d'arrêt selon la revendication 1, caractérisé en ce que le levier détecteur (12) coopère avec un interrupteur (18) de mise en marche dudit moteur, le levier détecteur actionnant l'interrupteur dans ladite position active.Stop device according to claim 1, characterized in that the detector lever (12) cooperates with a switch (18) for starting said motor, the detector lever actuating the switch in said active position. Dispositif d'arrêt selon la revendication 3, caractérisé en ce que la came (8) comprend une indentation (8-1) dans laquelle rentre un talon (12-3) du levier détecteur (12) dans la position active.Stop device according to claim 3, characterized in that the cam (8) comprises an indentation (8-1) in which a heel (12-3) of the detector lever (12) enters the active position. Dispositif d'arrêt selon la revendication 3, caractérisé en ce que la came (8) comprend une encoche (8-2) coopérant avec un deuxième interrupteur de détection de la position de la came.Stop device according to claim 3, characterized in that the cam (8) comprises a notch (8-2) cooperating with a second switch for detecting the position of the cam. Dispositif d'arrêt selon la revendication 2, caractérisé en ce que le sabot (1) est articulé sur le levier (3) de façon excentrée et en ce qu'un ressort (20) est disposé entre le levier et le sabot.Stop device according to claim 2, characterized in that the shoe (1) is articulated on the lever (3) eccentrically and in that a spring (20) is arranged between the lever and the shoe.
EP93420003A 1992-01-07 1993-01-05 Device for stopping the drum Expired - Lifetime EP0551238B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200226A FR2685927B1 (en) 1992-01-07 1992-01-07 DRUM STOPPING DEVICE.
FR9200226 1992-01-07

Publications (2)

Publication Number Publication Date
EP0551238A1 true EP0551238A1 (en) 1993-07-14
EP0551238B1 EP0551238B1 (en) 1998-07-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420003A Expired - Lifetime EP0551238B1 (en) 1992-01-07 1993-01-05 Device for stopping the drum

Country Status (3)

Country Link
EP (1) EP0551238B1 (en)
DE (1) DE69319934T2 (en)
FR (1) FR2685927B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2297946A1 (en) * 1975-01-17 1976-08-13 Bosch Siemens Hausgeraete Washing machine drum stop unit - has posn indicator linked to motor electronic control circuit to stop drum at same place (NL200776)
DE3310279A1 (en) * 1983-03-22 1984-09-27 Miele & Cie GmbH & Co, 4830 Gütersloh Positioning device for the drum of a casing-loadable drum-type washing machine
EP0347393A2 (en) * 1988-06-17 1989-12-20 SMEG S.p.A. Automatic locking device to stop the drum of washing machines at a given position
EP0408120A1 (en) * 1989-07-11 1991-01-16 Whirlpool France Washing machine with drum positioning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2297946A1 (en) * 1975-01-17 1976-08-13 Bosch Siemens Hausgeraete Washing machine drum stop unit - has posn indicator linked to motor electronic control circuit to stop drum at same place (NL200776)
DE3310279A1 (en) * 1983-03-22 1984-09-27 Miele & Cie GmbH & Co, 4830 Gütersloh Positioning device for the drum of a casing-loadable drum-type washing machine
EP0347393A2 (en) * 1988-06-17 1989-12-20 SMEG S.p.A. Automatic locking device to stop the drum of washing machines at a given position
EP0408120A1 (en) * 1989-07-11 1991-01-16 Whirlpool France Washing machine with drum positioning

Also Published As

Publication number Publication date
DE69319934T2 (en) 1999-04-22
FR2685927B1 (en) 1995-05-05
DE69319934D1 (en) 1998-09-03
FR2685927A1 (en) 1993-07-09
EP0551238B1 (en) 1998-07-29

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